The early constructions and disciple phase:
- 1975 Carbon analysis filters (fathers
project)
- 1976 Divided Stage PA for isis (H. Hogg's idea)
- 1978 Smooth singing guitar
distortion (still unique!)
- 1979 The PA and light system for Lizard (obsolete)
- 1980 Multi tap Digital Delay (obsolete)
- 1981 The first Polyphonic
experiences
- 1982 C32 discrete Digital Signal Processor (H. Hogg's idea and
project)
- 1983 Image compression (diploma work at ETH, obsolete)
- 1983 The rolling Stage (Renato Capellis project)
Projects and ideas:
- Auto power off for acoustic guitar (in new Rolf
Spuler guitars!)
- POLYMODULE Concept to
standardize polyphonic guitars and make it accessible for lutiers
- POLYSUBBASS for monophonic guitars
- Flexibility Amp (Modular combo for acoustic guitar / mic...
drawing available)
- Flat Volume pedal
- "Banjo with interconnected strings" (a
dream)
- Vapor solar generator for socialized clean energy
- Acoustic piano with Bass Pedal and magnetic feedback
- Percussion instruments with piezo pickups (prototypes
working!)
- Jam as a solution for the Bahian unemployment